﻿a{
    text-decoration:none;
}
#u1{
    margin-top: 20px;
    margin-bottom: 10px;
}
.tb{
    width:100%;
    margin:0;
    padding:5px 4px;
    border:1px solid #ccc;
    box-sizing:border-box;
}
#w{
    width:300px;
    height:250px;
    padding:10px;
    display: none;
}